A kind of phase change thermally conductive material and preparation method thereof

A phase change thermal conductivity, graphite powder technology, applied in the field of thermal conductivity materials, can solve the problems of low temperature, inability to meet requirements, inapplicability, etc., to achieve high flame retardant level, improve heat dissipation effect, and efficient thermal management.

Active Publication Date: 2022-02-15
东莞市美庆电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use temperature is too low, it is not suitable for some high temperature components, and it cannot meet the demand

Method used

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  • A kind of phase change thermally conductive material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Bake 10 parts of graphite powder, 5 parts of aluminum nitride powder, 10 parts of zinc oxide powder, 5 parts of aluminum oxide powder, 10 parts of magnesium oxide, and 5 parts of glass fiber in an oven at 100°C for 10 hours, then put them into a ball mill and mill them for 12 hours to disperse the powder material evenly, add 5 parts of flame retardant, 3 parts of coupling agent, and 1 part of toughening agent, and continue ball milling for 6 hours; graphite powder, aluminum nitride powder, zinc oxide powder, aluminum oxide powder, magnesium oxide powder The particle size is 100nm, and the particle size of glass fiber is 1μm; the flame retardant is a mixture of oligopolyammonium phosphate, brominated polystyrene, and antimony trioxide, and the mass ratio of the three is 1:1:1; the coupling agent It is an aluminate coupling agent;

[0032] Add 95 parts of paraffin, 25 parts of polyethylene, and 5 parts of ethylene-vinyl acetate copolymer into a stirring device with a temp...

Embodiment 2

[0034] Bake 10 parts of graphite powder, 5 parts of aluminum nitride powder, 10 parts of zinc oxide powder, 5 parts of aluminum oxide powder, 10 parts of magnesium oxide, and 5 parts of glass fiber in an oven at 80°C for 12 hours, then put them into a ball mill and mill them for 8 hours , to disperse the powder evenly, add 10 parts of flame retardant, 1 part of coupling agent, and 3 parts of toughening agent, and continue ball milling for 4 hours; graphite powder, aluminum nitride powder, zinc oxide powder, aluminum oxide powder, magnesium oxide The particle size of the glass fiber is 50nm, and the particle size of the glass fiber is 5μm; the flame retardant is a mixture of oligopolyammonium phosphate, brominated polystyrene, and antimony trioxide, and the mass ratio of the three is 1:1:1; coupling The agent is a silane coupling agent;

[0035] Add 105 parts of paraffin, 10 parts of polyethylene, and 10 parts of ethylene-vinyl acetate copolymer into a stirring device with a te...

Embodiment 3

[0037]Bake 6 parts of graphite powder, 10 parts of aluminum nitride powder, 7 parts of zinc oxide powder, 5 parts of aluminum oxide powder, 7 parts of magnesium oxide, and 9 parts of glass fiber in an oven at 90°C for 11 hours, then put them into a ball mill and mill them for 9 hours , to disperse the powder evenly, add 7 parts of flame retardant, 2 parts of coupling agent, and 2 parts of toughening agent, and continue ball milling for 5 hours; graphite powder, aluminum nitride powder, zinc oxide powder, aluminum oxide powder, magnesium oxide The particle size of the glass fiber is 60nm, and the particle size of the glass fiber is 7μm; the flame retardant is a mixture of oligopolyammonium phosphate, brominated polystyrene, and antimony trioxide, and the mass ratio of the three is 1:1:1; coupling The agent is an aluminate coupling agent;

[0038] Add 105 parts of paraffin wax, 15 parts of polyethylene, and 8 parts of ethylene-vinyl acetate copolymer into a stirring device with ...

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Abstract

The invention provides a phase-change heat-conducting material and a preparation method thereof. The phase-change heat-conducting material is located between a heat source and a heat sink, and is composed of graphite powder, aluminum nitride powder, zinc oxide powder, aluminum oxide powder, magnesium oxide, paraffin wax , polyethylene, ethylene-vinyl acetate copolymer, glass fiber, flame retardant, coupling agent, and toughening agent. The invention provides a phase-change heat-conducting material with ultra-high thermal conductivity, which exhibits a phase change during the working process, can minimize thermal resistance, continuously transfer heat out, and improve heat dissipation effect. Moreover, the material prepared by the invention is a good conductor of heat, has a high level of flame retardancy, has strong flame retardancy, is insulating, and can realize efficient heat management in components and parts.

Description

technical field [0001] The invention relates to the technical field of heat-conducting materials, in particular to a phase-change heat-conducting material and a preparation method thereof. Background technique [0002] With the development of semiconductor and electronic technology, the power of components has increased sharply, and the accompanying thermal effect is an important reason for device failure. The heat generated by electronic components during operation has an increasingly serious impact on the working efficiency and service life of electronic equipment, and more and more attention has been paid to safe and efficient heat dissipation solutions. Traditional thermal management solutions include thermal silica sheets, thermal pastes, phase change materials, etc. The base materials are all silicone rubbers made of silicone oil or silicone oil with active groups cross-linked and polymerized. [0003] During the process of phase change itself, phase change materials ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/066
Inventor 林永进
Owner 东莞市美庆电子科技有限公司
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